Improvement in brick-molds



N.IPETERS, PHOTOJTHOGHAPNER, WASHINGTON, D. C.

f naar Yuna dition I intim,

GVOTTLIEB GR'Anss'Ln, or HAMILTON, OHIO, Assiettes fro HIMsELr AND L.nwmrn.

Letters Patent No. l109,313, dated November 15, 1870.

IMPROVEMENT IN BRICK-MOLDSI The Schedule referred to in these LettersPatent anmaking part of the same.

To all whom it may concer/nf.;

. Be it known that II, Germani; GnAEssLn, of Ilami ilton, inthe countyvof Butler and State of Ohio, have invented .certain new' aud vusefulImprovements in Brick-Molds; and'I doherebydeclare that the following isafull, clear, land exact description thereof,v

reference beinghad to the accompanying drawing VAmaking part of thisspecification and to the letters of -reference.markedthereon, likeletteisindicatinn like parts wherever they occur'.

, To enable others skilled in the art to construct and luse my inventionI will proceed to describe it.

.'j-My inventionl consists in a brick-mold, provided 'with'a slidingbottom .and a steel lining; and also in adevice for oiling orlubricating the .interior Ot' thc mold, as hereinafterdescribed.

In the drawing-- Figure 1 is a ltop-plan view of my mold rca-dy for use,the bottom being closed.

Figure 2 is a side elevation of the same. v Figure '3 is'abottomplau`view of the mold, with Vthe bottom partially opened.

Figure 4 is an end view of tlie mold, with bottom closed.' *Y Figure 5is a cross-section of the mold, with bottom partially opened. f

Figures 6 and 7 are Vrespectively a side' eleva-tion Aand across-section of thelubricatiugdevce.

In constructing vmy mold rst provide a strong wooden frame, A, of anydesired form, andhaving any convenient number of cells or Openings C, ofthe tbl-rn of the required brick.

'.lhe inner walls of thesccells I line'with sheets or plates of steel c,by which I obtain sharper cornersA and edges, and smoother surfaces outhe brick, than where wooden surfaces-.are brought in contact with theclay.

On the under sidehf the cross-bars of the frame I secure metal bars e,of a dovetail or T-form, in-crosssection, for thc purpose of-holding andguiding the slid# ing bettom. v

B represents this bottom, made of a. form and size to cover the lowerside of the frame, and having steel .platesd secured toits face, asshown in gs. 2, 4, and 5.

The ends of these steel plates engage under thev bars e, and thus holdthe bottom in postionagainst In the back side of the. two middlecross-bars of the frame I make grooves h, and in these grooves I pivotarms f, and connect the outer ends of these arms by a handle, y, asshown iu figs. 3 and 4.

- heu these arms are turned down into the slots the bottom may be `slidback so as to close the mold,

-hut vupon pulling up the handle g the arms will slitte.`

back the bottom and-openthe lower side of cells C, as shown in gs. 3 and5.

Y To the hack side of theframe A, I secure a plate or shield, j,whioh'is bent outward so as to let the edge of the bottom pass under it,as shown in iig. 5'. The purpose of this shield is to form aconvenient'.A h old for the operator, and to prevent his fingers fromget-ting into the cells, and thus bebruised or injured, when thebottom-is closed.

4In using my mold the bottom is closed and the cells filled with clay iuthe usual manner.l The mold is then turned bottom side-up on a datsurface, and thc handle raised so as te slide back' the bottoni, whenthcmold, upon being raised, will-part readily from the brick.

VIubrick-molds .of all kinds it is' necessary, before the brick can hetnrnedout, that air shall be admitted into the cells behind them. Inmolds of the ordi nary construction having stationary bottoms it isusual to leave a slit or opening along in the lower vedges of the cellsfor this purpose, and when the clay is pressed into thc-cells a thinfilm of clay is worked out into these slits, this ilmbeiug broken oiiwhen the bricks are turned out, and thus the bricks left with rough,irregular edges." But lin a mold of my construction. it is tightlyclosedwhile the clay is being molded, and consequently producesbricks havingsquare sharp edges andcorucrs.

For-the purpose of oiling or lubricating the interior surfaces of thcmold I provide a bar, D, having pads or heads E mounted on it,these.padsbeing equal in number to the cells in the mold, aud ofthe samc form andsize, and in the same relative positions as the said cells. i

' The bar D Iseo-ure in a convenient position with the pads uppermost,and thoroughlysaturate the latter with any suitable substance,preferably coal-oil, and after eacli using of.` the mold shove it downover 'thcpads, which thoroughly lubricates the '-cells, it beingunderstood that the bottom is closed during the operation. l l l I nthis manner I produce a simple and eic'i'ent de-v vice by which themoldcan be quickly and thoroughly lubricated.

Itis obvious that, if desired, eyesmay besecurd 'to the back edge ofthe'sliding bottom, through which the arms f shall pla'y, and thus allowof the bottom being closedhy opening the handle y.

Having thus described my invention.

Wha-t I claim isj 1. A portable brick-mold, hnvin` its bottoni Barranged-to slide laterally, substantially as described.

2. In colnbnmton with the molds oreompmtments O, having the steel plateasecured to their sides and ends', the sliding bottom B, having the steelplates Z v attached thereto and engaging over the cross-bars c,

:ill constructed and arranged to operate substantially as described. f3. The combination' of the mold or frame A, sliding bottom B, and leversf, constructed mld arranged to operate *as set forth. l

4.111 combination with zb portable brick-mold, the pads E, mounted onsupports D, and having alubricnting-snrfwe' on their bottom :md sidesfor lubricating the interior of' the molds, as set forth.

GOTTLIEB GRAESSLE.

Witnesses:

J. L. KIBKPATRIGE., M. D., C. S. CURTIS.

